ADF4211

Replacement Parts

Rochester Electronics is the only authorized source of Analog Devices' products that have previously been discontinued or have become obsolete. Product availability should be checked directly with Rochester Electronics.

Product Details

The ADF4210/ADF4211/ADF4212/ADF4213 is a
dual frequency synthesizer which can be used to
implement local oscillators in the up-conversion and
down-conversion sections of wireless receivers and
transmitters. They can provide the LO for both the
RF and IF sections. They consist of a low-noise digital
PFD (Phase Frequency Detector), a precision
charge pump, a programmable reference divider,
programmable A and B counters and a dual-modulus
prescaler (P/P+1). The A (6-bit) and B (12-bit)
counters, in conjunction with the dual modulus
prescaler (P/P+1), implement an N divider (N=
BP+A). In addition, the 15-bit reference counter (R
Counter), allows selectable REFIN frequencies at the
PFD input. A complete PLL (Phase-Locked Loop)
can be implemented if the synthesizers are used with
an external loop filter and VCO's (Voltage Controlled
Oscillators)Control of all the on-chip registers is via
a simple 3-wire interface. The devices operate with a
3V ( ± 10%) or 5V( ± 10%) power supply and can be
powered down when not in use.